Over smartness pun

Result Of Over Smartness
A new vacuum salesman knocked at the door.
A lady opened the door.
Before she could speak, the salesman rushed into the living room and emptied a bag of cow shit on the carpet.

Salesman : Madam, if I cannot clean this up in nxt 15 mins with my new powerful vaccum cleaner, i'll EAT all this Shit...! ;O